Illumination apparatus, display apparatus, and electronic device

ABSTRACT

An illumination apparatus includes: a light guiding plate; a plurality of light-emitting elements disposed along a side-end surface of the light guiding plate that serves as a light-entry portion, each of the plurality of light-emitting elements having a light-emitting surface facing toward the side-end surface; a light source substrate that extends along the light-entry portion and has the plurality of light-emitting elements disposed thereon on one surface side that faces the light-entry portion; and a connector member, held on another surface side of the light source substrate that opposes the one surface side, for supplying power to the plurality of light-emitting elements.

CROSS-REFERENCE TO THE RELATED APPLICATIONS

This application is a continuation application of U.S. patentapplication Ser. No. 13/553,284 filed Jul. 19, 2012, which claimspriority to Japanese Patent Application No. 2011-161707 filed Jul. 25,2011, of which the entire contents are expressly incorporated byreference herein.

BACKGROUND

1. Technical Field

The present invention relates to illumination apparatuses provided withlight guiding plates and light-emitting elements, display apparatusesprovided with such illumination apparatuses, and electronic devicesprovided with such display apparatuses.

2. Related Art

Of the various types of display apparatuses, liquid-crystal apparatusesinclude an illumination apparatus referred to as a “light guiding plateapparatus” and a transmissive or partially-transmissive display panel(liquid-crystal panel) disposed on top of the illumination apparatus inan overlapping manner on the side of the light-emitting surface thereof;in the illumination apparatus, a plurality of light-emitting elementsare provided along the side-end surfaces of the light guiding plate thatfunction as light-entry portions. In the illumination apparatus, a lightsource substrate is provided along the light-entry portion of the lightguiding plate, and a plurality of light-emitting elements are mounted onone surface of the light source substrate that opposes the light-entryportion. In addition, flexible wiring such as wires, lead lines,flexible wiring boards, and the like are led out from the light sourcesubstrate, and power is supplied to the light-emitting elements via thiswiring (JP-A-2007-279480, JP-A-2004-165124, and JP-A-2010-118348). OfJP-A-2007-279480, JP-A-2004-165124, and JP-A-2010-118348, with theillumination apparatus disclosed in JP-A-2007-279480, the leading endsof the wires led out from the light source substrate are connected to aconnector member.

With a configuration such as those disclosed in JP-A-2004-165124 andJP-A-2010-118348, in which flexible wiring is simply led out from thelight source substrate, electrically connecting the wiring to a lightsource driving unit requires effort. As opposed to this, if the wiringis connected to a connector member as per the configuration disclosed inJP-A-2007-279480, the electrical connection can be made with ease.

However, even when a connector member is used, when flexible wiringextends from the light source substrate as per the configurationdisclosed in JP-A-2007-279480, a large load is applied to the lightsource substrate via the wiring during assembly, which results in therisk of the light source substrate deforming. If such deformationoccurs, the optical axes of the light-emitting elements will tilt, whichis undesirable.

Here, the inventors have proposed an illumination apparatus having astructure in which a connector member 1071 is held by a light sourcesubstrate 1088, as shown in FIG. 10. More specifically, with anillumination apparatus 1008 shown in FIG. 10, a plurality oflight-emitting elements 1089 are provided along a light-entry portion1080 a of a light guiding plate 1080, and the light-emitting elements1089 are mounted on one surface 1881 of the light source substrate 1088that extends along the light-entry portion 1080 a of the light guidingplate 1080. Meanwhile, the connector member 1071 is also mounted on theone surface 1881 of the light source substrate 1088. Accordingly, whenincorporating the illumination apparatus 1008 into a display apparatus,power can be supplied to the light-emitting elements 1089 via the lightsource substrate 1088 simply by connecting the connector member 1071 toa connector member 1076 that is connected to wiring 1077 extending fromthe light source driving unit. Accordingly, there is an advantage inthat it is not necessary to have flexible wiring extending from thelight source substrate 1088.

However, with the configuration shown in FIG. 10, to avoid interferencebetween the light guiding plate 1080 and the connector members 1071 and1076, it is necessary to provide a cutout 1809 in the light guidingplate 1080, which is problematic in that the illumination area isreduced by that amount. Furthermore, when connecting the connectormember 1071 and the connector member 1076 after installing the lightsource substrate 1088 in the light guiding plate 1080, the light guidingplate 1080 interferes, which is problematic in that it is difficult tocarry out the task of connecting the connector member 1071 and theconnector member 1076.

SUMMARY

It is an advantage of some aspects of the invention to provide anillumination apparatus having a large illumination area and in whichconnector members can easily be connected to each other even in the casewhere the connector members are provided in a light source substrate onwhich light-emitting elements are mounted, as well as to provide adisplay apparatus including such an illumination apparatus and anelectronic device including such a display apparatus.

An illumination apparatus according to an aspect of the inventionincludes: a light guiding plate; a plurality of light-emitting elementsdisposed along a side-end surface of the light guiding plate that servesas a light-entry portion, each of the plurality of light-emittingelements having a light-emitting surface facing toward the side-endsurface; a light source substrate that extends along the light-entryportion and has the plurality of light-emitting elements disposedthereon on one surface side that faces the light-entry portion; and aconnector member, held on another surface side of the light sourcesubstrate that opposes the one surface side, for supplying power to theplurality of light-emitting elements.

According to this aspect of the invention, the plurality oflight-emitting elements are mounted on the one surface of the lightsource substrate, and the connector member is held by the light sourcesubstrate; thus power can be supplied to the light-emitting elements viathe connector member. It is thus unnecessary to lead flexible wiring outfrom the light source substrate, and as a result, the light sourcesubstrate does not deform due to a large load being applied to the lightsource substrate via the wiring during assembly. In addition, theconnector member is held on the another surface side of the light sourcesubstrate. Accordingly, it is not necessary to provide a cutout in thelight guiding plate in order to avoid interference between the lightguiding plate and the connector member, which increases the illuminationarea. Furthermore, even in the case where the connector member and aconnector member that forms a pair therewith are connected after thelight source substrate is disposed relative to the light guiding plate,the light guiding plate does not interfere, and thus the task ofconnecting the connector members can be carried out with ease.

In the invention, it is preferable for the light-entry portion to extendin a linear shape. In other words, it is preferable for the light-entryportion to extend in a linear manner without a cutout for avoidinginterference with the connector member being formed in the light-entryportion; this configuration is advantageous in that a large illuminationarea can be obtained.

In the invention, it is preferable for the light source substrate toinclude a support plate that configures the another surface side and aflexible wiring board that has a first part affixed to the support plateon the one surface side and a second part extending along the supportplate and over an end thereof; and for the second part of the flexiblewiring board to be bent back toward the another surface side andconnected to the connector member without being affixed to the onesurface side of the support plate. According to this configuration,there is an advantage in that separate wiring need not be extended fromthe one surface side of the light source substrate toward the connectormember on the other surface side.

In the invention, it is preferable for the support plate to be a metalplate. According to this configuration, heat produced by thelight-emitting elements can escape via the metal plate.

In the invention, a configuration can be employed in which the connectormember is provided further toward an end portion of the light sourcesubstrate in a lengthwise direction thereof than a light-emittingelement that, of the plurality of light-emitting elements, is locatedfurthest toward the end portion.

In the invention, it is preferable that a configuration be employed inwhich the connector member is provided within the range of thelengthwise direction of the light source substrate in which theplurality of light-emitting elements are disposed. In other words, inthe invention, the connector member is held on the another surface sideof the light source substrate; thus the restrictions on the location ofthe connector member are extremely low, such that the connector membercan be provided within the range of the lengthwise direction of thelight source substrate in which the plurality of light-emitting elementsare arranged and so on. Accordingly, the connector member can beprovided in a location suited to supplying power to the light-emittingelements.

In the invention, it is preferable that a configuration be employed inwhich a plurality of connector members are held on the another surfaceside of the light source substrate. In other words, in the invention,the connector members are held on the another surface side of the lightsource substrate, and thus there are extremely few restrictions on thenumber of connector members, such that a plurality of connector memberscan be provided and so on. Accordingly, a number of connector membersthat is suited to supplying power to the light-emitting elements can beprovided.

It is preferable that the illumination apparatus according to theinvention be used in a display apparatus, and in such a case, thedisplay apparatus include a display panel disposed overlapping alight-emitting surface side of the light guiding plate.

It is preferable that the display apparatus according to the inventionbe used in an electronic device such as an LCD television.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described with reference to the accompanyingdrawings, wherein like numbers reference like elements.

FIGS. 1A and 1B are schematic diagrams illustrating an LCD television(electronic device) provided with a display apparatus according to afirst embodiment of the invention.

FIGS. 2A and 2B are schematic diagrams illustrating the overallconfiguration of the display apparatus according to the first embodimentof the invention.

FIG. 3 is an exploded perspective view showing the display apparatusaccording to the first embodiment of the invention on a more detailedlevel.

FIGS. 4A and 4B are cross-sectional views illustrating the main elementsof the display apparatus according to the first embodiment of theinvention.

FIGS. 5A and 5B are schematic diagrams illustrating the configuration inthe vicinity of a light source substrate used in an illuminationapparatus of the display apparatus according to the first embodiment ofthe invention.

FIG. 6 is a schematic diagram illustrating, from above, theconfiguration of the illumination apparatus of the display apparatusaccording to the first embodiment of the invention.

FIG. 7 is a schematic diagram illustrating, from above, theconfiguration of an illumination apparatus of a display apparatusaccording to a second embodiment of the invention.

FIGS. 8A and 8B are schematic diagrams illustrating the configuration inthe vicinity of a light source substrate used in an illuminationapparatus of a display apparatus according to a third embodiment of theinvention.

FIG. 9 is a schematic diagram illustrating, from above, theconfiguration of an illumination apparatus of a display apparatusaccording to a fourth embodiment of the invention.

FIG. 10 is a schematic diagram illustrating, from above, theconfiguration of an illumination apparatus according to past art.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

Embodiments in which the invention has been applied in a displayapparatus for an LCD television will be described hereinafter withreference to the drawings. Note that in the drawings referred to in thefollowing descriptions, the dimensions of various layers, members, andso on have been varied in order to illustrate those layers, members, andso on at sizes that can be viewed more easily. It should also be notedthat in the following descriptions, the planar directions of a lightguiding plate, a liquid-crystal panel, and so on that are orthogonal toeach other are taken as the X-axis direction (the direction along whichthe long side of the light guiding plate, the liquid-crystal panel, orthe like (a display panel) extends in the drawings) and the Y-axisdirection (the direction along which the short side of the light guidingplate, the liquid-crystal panel, or the like extends in the drawings),and the direction that is orthogonal to both the X-axis direction andthe Y-axis direction (the direction along which the light guiding plateand the liquid-crystal panel are layered in the drawings) is taken asthe Z-axis direction. Furthermore, in the drawings referred tohereinafter, one side of the X-axis direction is taken as an X1 side,and the other side is taken as an X2 side; one side of the Y-axisdirection (the direction in which an overhang portion of theliquid-crystal panel is disposed) is taken as a Y1 side, and the otherdirection opposed thereto is taken as a Y2 side; and one side of theZ-axis direction (the direction facing the rear surface of the lightguiding plate) is taken as a Z1 side (a bottom side), and the otherdirection opposed thereto (the side toward which illumination light,display light, and so on are emitted) is taken as a Z2 side (a topside).

First Embodiment Overall Configuration

FIGS. 1A and 1B are schematic diagrams illustrating an LCD television(electronic device) provided with a display apparatus according to afirst embodiment of the invention, where FIG. 1A is a schematic diagramillustrating the LCD television from the exterior thereof, and FIG. 1Bis a block diagram illustrating the electrical configuration of thedisplay apparatus.

An electronic device 2000 shown in FIG. 1A is an LCD television, andincludes a display apparatus 100, a television frame 2010, and so on. Asshown in FIG. 1B, the display apparatus 100 includes a display panel 10(a liquid-crystal panel), which will be mentioned later with referenceto FIGS. 2A, 2B, and so on, an image signal supply unit 270 thatsupplies image signals to the display panel 10, and an illuminationapparatus 8 that supplies illumination light to the display panel 10. Inaddition, the display apparatus 100 includes a scanning line drivingcircuit 104 that drives scanning lines extending in the display panel 10in the X-axis direction thereof, and a data line driving circuit 101that drives data lines extending in the display panel 10 in the Y-axisdirection thereof. A configuration in which the scanning line drivingcircuit 104 and the data line driving circuit 101 are both installed inthe display panel 10 can be employed. Alternatively, a configuration inwhich one of the scanning line driving circuit 104 and the data linedriving circuit 101 is installed in the display panel 10 and the otheris installed in a COG-mounted driving IC in the display panel 10 can beemployed. Furthermore, a configuration in which one of the scanning linedriving circuit 104 and the data line driving circuit 101 is installedin the display panel 10 and the other is installed in a driving ICmounted on a circuit board that is electrically connected to the displaypanel 10 can be employed. Further still, a configuration in which boththe scanning line driving circuit 104 and the data line driving circuit101 are installed in a driving IC that is separate from the displaypanel 10 can be employed.

In this embodiment, the illumination apparatus 8 includes: a lightguiding plate 80 disposed so as to overlap with the display panel 10; aplurality of light-emitting elements 89 disposed along side-end surfacesof the light guiding plate 80 that are assigned as light-entry portions80 a; light source substrates 88 on which the plurality oflight-emitting elements 89 are mounted; and a light source driving unit280 that drives the light-emitting elements 89. In this embodiment, thedisplay panel 10 is a laterally-long quadrangle having four sides 10 a,10 b, 10 c, and 10 d. Of the sides 10 a, 10 b, 10 c, and 10 d, the side10 a is a long side located on the one side Y1 in the Y-axis direction,the side 10 b is a long side located on the other side Y2 in the Y-axisdirection, the side 10 c is a short side located on the other side X2 inthe X-axis direction, and the side 10 d is a short side located on theone side X1 in the X-axis direction. In correspondence with this shape,the light guiding plate 80 has four side-end surfaces 801, 802, 803, and804. Of these side-end surfaces 801, 802, 803, and 804, the side-endsurface 801 is located on the long side corresponding to the one side Y1in the Y-axis direction, the side-end surface 802 is located on the longside corresponding to the other side Y2 in the Y-axis direction, theside-end surface 803 is located on the short side corresponding to theone side X1 in the X-axis direction, and the side-end surface 804 islocated on the short side corresponding to the other side X2 in theX-axis direction. In this embodiment, of the four side-end surfaces 801,802, 803, and 804 of the light guiding plate 80, the two side-endsurfaces 801 and 802 that are opposed in the short side direction (theY-axis direction) serve as the light-entry portions 80 a. Accordingly,the light-emitting elements 89 are disposed along each of the twoside-end surfaces 801 and 802 (the light-entry portions 80 a) in thelight guiding plate 80, and the light source substrates 88 extend alongthe respective two side-end surfaces 801 and 802 (light-entry portions80 a) in the light guiding plate 80.

Note that in this embodiment, the power to the light-emitting elements89 is supplied by the light source driving unit 280 via wiring 77, aconnector 70 configured of connector members 71 and 76, and the lightsource substrate 88, as will be mentioned later.

Detailed Configuration of Display Apparatus 100

FIGS. 2A and 2B are schematic diagrams illustrating the overallconfiguration of the display apparatus 100 according to the firstembodiment of the invention, and are a perspective view and an explodedperspective view, respectively, of the display apparatus 100. FIG. 3 isan exploded perspective view showing the display apparatus 100 accordingto the first embodiment of the invention on a more detailed level. FIGS.4A and 4B are cross-sectional views illustrating the main elements ofthe display apparatus 100 according to the first embodiment of theinvention, and are a cross-sectional view taken along the IVA-IVA lineof the display apparatus 100 shown in FIG. 1A and a cross-sectional viewtaken along the IVB-IVB line of the display apparatus 100 shown in FIG.1A, respectively.

In FIGS. 2A, 2B, 3, 4A, and 4B, the display apparatus 100 according tothis embodiment is, generally speaking, configured of the illuminationapparatus 8, which is referred to as a light guiding plate apparatus,and the transmissive type display panel 10, which is disposed so as tooverlap with the top surface of the illumination apparatus 8. In thisembodiment, the display panel 10 is configured of a transmissive typeliquid-crystal panel. In the display apparatus 100, the illuminationapparatus 8 includes: a metallic first frame 40 (lower metalframe/metallic frame) disposed so as to cover the rear surface of thelight guiding plate 80 on the bottom side (one side Z1 in the Z-axisdirection); a resinous second frame 30 (resin frame) that holds the endsof the display panel 10 above the first frame 40 and surrounds and holdsthe illumination apparatus 8; and a metallic third frame 50 (upper metalframe) disposed on the top side (another side Z2 in the Z-axisdirection) of the second frame 30.

The second frame 30 has a rectangular frame shape that holds the ends ofthe display panel 10 and surrounds the outside of the display panel 10,and in this embodiment, the second frame 30 is configured of four frameplates 31, 32, 33, and 34 that are divided into four side sectionscorresponding to the four sides of the display panel 10. In thisembodiment, the second frame 30 is black, and prevents the occurrence ofstray light within the illumination apparatus 8 by functioning as alight absorption member. The frame plates 31, 32, 33, and 34respectively include: side plate portions 311, 321, 331, and 341 thatextend downward from the outer surface sides of the frame plates 31, 32,33, and 34; upper plate portions 315, 325, 335, and 345 (end plateportions) that are bent inward from the upper edges of the side plateportions 311, 321, 331, and 341, respectively; and protruding plateportions 312, 322, 332, and 342 that protrude inward from a positionpartway along the height direction of the upper plate portions 315, 325,335, and 345, respectively. Accordingly, step portions 313, 323, 333,and 343 are formed by the protruding plate portions 312, 322, 332, and342 on the inner sides of the frame plates 31, 32, 33, and 34,respectively, and the display panel 10 is held by the step portions 313,323, 333, and 343 and the protruding plate portions 312, 322, 332, and342. Meanwhile, the light guiding plate 80, the light-emitting elements89, and so on of the illumination apparatus 8 are disposed on the bottomside of the protruding plate portion 312.

The first frame 40 is formed through press-machining a thin metal platesuch as SUS or the like. The first frame 40 includes a base plateportion 45 and three side plate portions 42, 43, and 44 that stand erectfrom the three outer edges of the base plate portion 45 aside from theedge corresponding to the one side Y1 in the Y-axis direction, and has arectangular box-shape whose top surface is open. The side plate portions321, 331, and 341 of the second frame 30 overlap on the outside of theside plate portions 42, 43, and 44, respectively, of the first frame 40.Meanwhile, the side plate portion 311 of the second frame 30 covers theone side Y1 of the first frame 40 in the Y-axis direction.

The third frame 50 is, like the first frame 40, formed throughpress-machining a thin metal plate such as SUS or the like. The thirdframe 50 includes a rectangular upper plate portion 55 (end plateportion) and four side plate portions 51, 52, 53, and 54 formed bybending the outer edges of the upper plate portion 55 downward, and hasa rectangular box-shape whose bottom surface is open. The side plateportions 51, 52, 53, and 54 overlap on the outside of the side plateportions 311, 321, 331, and 341, respectively, of the second frame 30. Arectangular window 550 that emits the light emitted from the displaypanel 10 is formed in the upper plate portion 55, and the upper plateportion 55 covers the entire circumference of the outer circumferentialedges of the side of the display panel 10 that emits display light.

The third frame 50, second frame 30, and first frame 40 configured inthis manner are connected using screws (not shown), and the displaypanel 10, illumination apparatus 8, and so on are held therein as aresult. Here, as shown in FIGS. 4A and 4B, flexible sheets 91 and 92 areaffixed to the bottom surface and top surface, respectively, of theprotruding plate portions 312, 322, 332, and 342 of the second frame 30.Accordingly, when the display apparatus 100 is assembled, the displaypanel 10 is supported by the protruding plate portions 312 through 342via the flexible sheet 92. Likewise, when the display apparatus 100 isassembled, the illumination apparatus 8 is supported via the flexiblesheet 91. Furthermore, when the display apparatus 100 is assembled, anoptical sheet of the illumination apparatus 8 (a diffusion sheet 182,prism sheets 183 and 184, and so on) is suppressed from lifting,positional skewing, and so on via the flexible sheet 91.

Configuration of Display Panel 10

As shown in FIGS. 2A, 2B, 3, 4A, and 4B, the display panel 10 includes:an element substrate 11 having a planar quadrangular shape and in whichpixel electrodes (not shown) and the like are formed; an opposingsubstrate 12 disposed opposite to the element substrate 11 with apredetermined gap provided therebetween; and a sealant 14 that affixesthe opposing substrate 12 and the element substrate 11 to each other. Inthe display panel 10, a liquid-crystal layer 13 is held within a regionsurrounded by the sealant 14. The element substrate 11 and the opposingsubstrate 12 are configured of light-transmissive substrates such asglass substrates. In the element substrate 11, a plurality of scanninglines (not shown) extend along the X-axis direction, whereas a pluralityof data lines extend along the Y-axis direction; switching elements (notshown) and pixel electrodes are provided corresponding to each locationwhere the scanning lines and data lines intersect (not shown).

In this embodiment, the opposing substrate 12 is disposed on the sidetoward which display light is emitted, and the element substrate 11 isdisposed on the side of the illumination apparatus 8. Meanwhile, aframe-shaped layer (not shown) configured of a light-blocking layer isformed on the surface of the opposing substrate 12 that is opposed tothe element substrate 11 so as to follow the inner edges of the sealant14. The display panel 10 is configured of a TN (twisted nematic), ECB(electrically-controlled birefringence), or VAN (vertical alignednematic) liquid-crystal panel; the pixel electrodes are formed in theelement substrate 11, and a common electrode (not shown) is formed inthe opposing substrate 12. Note that in the case where the display panel10 is an IPS (in-plane switching) or FFS (fringe field switching)liquid-crystal panel, the common electrode is provided in the elementsubstrate 11. The element substrate 11 may also be disposed on the sideof the opposing substrate 12 toward which the display light is emitted.An upper polarization plate 18 is disposed overlapping the upper surfaceof the display panel 10, and a lower polarization plate 17 is disposedbetween the lower surface of the display panel 10 and the illuminationapparatus 8.

In this embodiment, the element substrate 11 is larger than the opposingsubstrate 12. Accordingly, the element substrate 11 includes an overhangportion 110 that extends past the end portion of the opposing substrate12 on the one side Y1 in the Y-axis direction, and a plurality offlexible wiring boards 200 are connected to the top surface of theoverhang portion 110. The flexible wiring boards 200 are connected to acircuit board 250 configured of a rigid board, and a control IC (notshown) that configures the image signal supply unit 270 described withreference to FIGS. 1A and 1B, a light source driving IC (not shown) thatconfigures the light source driving unit 280, and so on are mounted onthe circuit board 250.

Configuration of Illumination Apparatus 8

FIGS. 5A and 5B are schematic diagrams illustrating the configuration inthe vicinity of the light source substrate 88 used in the illuminationapparatus 8 of the display apparatus 100 according to the firstembodiment of the invention; FIG. 5A is a diagram schematicallyillustrating the light source substrate 88 from one surface 881, whereasFIG. 5B is a diagram schematically illustrating the light sourcesubstrate 88 from another surface 882. Note that the configurations ofthe light-emitting elements 89, light source substrates 88, and so ondisposed on the two side-end surfaces 801 and 802 (the light-entryportions 80 a) that oppose each other in the Y-axis direction of thelight guiding plate 80 are the same. Accordingly, FIG. 5A illustratesthe light-emitting elements 89, the light source substrate 88, and so ondisposed on the side-end surface 802 of the light guiding plate 80,whereas FIG. 5B illustrates the light-emitting elements 89, the lightsource substrate 88, and so on disposed on the side-end surface 801 ofthe light guiding plate 80.

As shown in FIGS. 3, 4A, and 4B, the illumination apparatus 8 includes:the light guiding plate 80 disposed so as to overlap with the bottomsurface of the display panel 10; and the plurality of light-emittingelements 89 arranged from one end of the light-entry portions 80 a (theone side X1 in the X-axis direction) toward the other end (the otherside X2 in the X-axis direction) with their light-emitting surfaces 89 afacing toward the light-entry portions 80 a of the light guiding plate80. In this embodiment, the plurality of light-emitting elements 89 aremounted on one surface 881 of the light source substrate 88 that extendsin the X-axis direction following the light-entry portions 80 a. Thelight-emitting elements 89 are LEDs (light-emitting diodes) that emitwhite light, and emit light source light as divergent light.

In the illumination apparatus 8 according to this embodiment, of theside-end surfaces 801, 802, 803, and 804 of the light guiding plate 80,the two side-end surfaces 801 and 802 opposite to each other in theY-axis direction are used as the light-entry portions 80 a. For thisreason, the plurality of light-emitting elements 89 have theirlight-emitting surfaces 89 a pointed toward the two light-entry portions80 a (the side-end surfaces 801 and 802) of the light guiding plate 80,and are arranged from one end toward the other end of each of the twolight-entry portions 80 a (the side-end surfaces 801 and 802).Meanwhile, the light source substrates 88 are disposed extending alongthe two light-entry portions 80 a (the side-end surfaces 801 and 802),respectively, and the plurality of light-emitting elements 89 aremounted on the respective one surfaces 881 of the two light sourcesubstrates 88.

In this embodiment, the light guiding plate 80 is a light-transmissiveresin plate configured of an acrylic resin, a polycarbonate resin, orthe like, and is disposed between a bottom surface 80 c of the lightguiding plate 80 and the base plate portion 45 of the first frame 40with a reflective sheet 187 overlapping thereupon. Meanwhile, an opticalsheet such as the diffusion sheet 182, the prism sheets 183 and 184, orthe like are disposed in an overlapping manner between a top surface (alight-emitting surface 80 b) of the light guiding plate 80 and thedisplay panel 10. In this embodiment, the two prism sheets 183 and 184are disposed so that their respective ridgelines are orthogonal to eachother. Accordingly, illumination light emitted from the light-emittingsurface 80 b of the light guiding plate 80 is diffused in all directionsby the diffusion sheet 182, and is then imparted with directionality bythe two prism sheets 183 and 184 so as to have a peak in the forwarddirection of the display panel 10. A scattering pattern configured offine concave recesses, the printed layer of a scattering member, or thelike is formed on the surface of the light guiding plate 80 located onthe side of the reflective sheet 187, and in this embodiment, thedensity of the scattering pattern becomes greater as the patternprogresses away from the light-emitting elements 89. Accordingly, theintensity distribution of the illumination light emitted from the lightguiding plate 80 is made uniform regardless of the distance from thelight-emitting elements 89. In this embodiment, many fine recesses 80 eare provided in the bottom surface 80 c of the light guiding plate 80 asthe scattering pattern.

Steps are formed from area to area in a region of the base plate portion45 of the first frame 40 that overlaps with the side of the lightguiding plate 80 in which the side-end surface 801 is located so that agap can be secured between the bottom surface 80 c of the light guidingplate 80 and the first frame 40, and are bent toward the light guidingplate 80. Through this, the reflective sheet 187 and bottom plateportions 61 of light source support members 60 can be held in the gapbetween the bottom surface 80 c of the light guiding plate 80 and thebase plate portion 45. Meanwhile, a recess portion is formed on the rearsurface side of the first frame 40 by bending the base plate portion 45of the first frame 40 toward the light guiding plate 80 partially, andthus the flexible wiring boards 200 are bent as far as the bottomsurface (rear surface) of the base plate portion 45 of the first frame40 and the circuit board 250 is accommodated within the depth of therecess portion. Accordingly, the illumination apparatus 8 can be madethinner.

In this embodiment, the light source substrates 88 are disposed so thatthe one surfaces 881 on which the light-emitting elements 89 are mountedoppose the light-entry portions 80 a of the light guiding plate 80. Inaddition, the light source substrates 88 are structured so that a wiringpattern, lands, and so on are provided along with an insulating layer onthe one surfaces 881 of plate-shaped metallic plates 887 (supportplates) that extend along the light-entry portions 80 a. Thisconfiguration can be realized by affixing, to the one surfaces 881 ofthe metallic plates 887, a flexible wiring board 888 in which a resinbase layer, a wiring pattern, and an insulating protective layer or thelike are stacked in that order. Accordingly, the lands on which thewiring pattern and the chips for the light-emitting elements 89 aremounted are electrically insulated from the metallic plates 887. In thisembodiment, the metallic plates 887 are configured of aluminum plates,and the metallic plates 887 ensure the mechanical strength of the lightsource substrates 88 and also function as heat dissipation plates thatdissipate the heat from the light-emitting elements 89.

As shown in FIGS. 3, 4A, 4B, 5A, and 5B, the light source supportmembers 60 that hold the light source substrates 88 are provided towardeach another surface 882 of the light source substrates 88, and thelight source support members 60 are disposed and held between the firstframe 40 and the second frame 30. In this embodiment, the light sourcesupport members 60 are bar-shaped metallic components that extend alongthe other surfaces 882 of the light source substrates 88. Each of thelight source support members 60 includes the bottom plate portion 61that overlaps with the base plate portion 45 of the first frame 40, anda substrate support plate portion 62 that configures a wall surfaceprotruding upward from a location partway along the width direction ofthe bottom plate portion 61. Furthermore, each of the light sourcesupport members 60 includes, toward the upper end of the substratesupport plate portion 62 (the side on the opposite side as the bottomplate portion 61), an upper plate portion 63 bent from the substratesupport plate portion 62 in the opposite direction as the side on whichthe light guiding plate 80 is located, and the upper plate portion 63 isanchored to the upper plate portion 55 of the third frame 50 and atleast one of upper plate portions 315 and 325 of the second frame 30using screws or the like.

In the light source support members 60 configured in this manner, thesurfaces of the substrate support plate portions 62 on the side on whichthe light guiding plate 80 is located correspond to substrate holdingsurfaces 620 that hold the light source substrates 88, and the lightsource substrates 88 are anchored to the substrate holding surfaces 620using screws or the like. In this state, the entire surface of eachanother surface 882 (the metallic plate 887) of the light sourcesubstrate 88 makes surface contact with the substrate holding surface620 of the light source support member 60, and overlaps in atightly-fitting state. The light source support members 60, meanwhile,are made of a metal such as aluminum, a ferrous metal, or the like.Accordingly, heat produced by the light-emitting elements 89 istransmitted to the light source support members 60 from the metallicplates 887 of the light source substrates 88, and the heat in the lightsource support members 60 is then transmitted to the first frame 40.This makes it possible to greatly suppress a rise in the temperature ofthe light-emitting elements 89.

Configuration of Connector Member 71

FIG. 6 is a schematic diagram illustrating, from above, theconfiguration of the main elements of the illumination apparatus 8 usedin the display apparatus 100 according to the first embodiment of theinvention.

As shown in FIGS. 5A, 5B, and 6, in the illumination apparatus 8according to this embodiment, the connector member 71, which includes aconnection surface, is mounted to the another surface 882 side of eachlight source substrate 88 (the opposite side as the side on which thelight guiding plate 80 is located) on the two side-end surfaces 801 and802 (light-entry portions 80 a) that oppose each other in the Y-axisdirection of the light guiding plate 80, at one end of each light sourcesubstrate 88 in the lengthwise direction thereof. More specifically, anend portion of the light source substrate 88 located on the one side X2in the X-axis direction corresponds to a protrusion portion 86 thatprotrudes beyond an end portion of the light source support members 60located on the one side X2 in the X-axis direction, and the connectormember 71 is provided on the other surface 882 side (the outer side) ofthe protrusion portion 86. Accordingly, the connector members 71 mountedon the two respective light source substrates 88 are disposed beingshifted toward the same side (the X2 side) in the X-axis direction.Here, on both the side-end surfaces 801 and 802 that serve as thelight-entry portions 80 a of the light guiding plate 80, the connectingsurfaces of the connector members 71 face toward the opposite side asthe side on which the light guiding plate 80 is located, rather thanbeing disposed so as to oppose the light guiding plate 80. Accordingly,because the connector members 71 are disposed so that their connectingsurfaces face outward, the task of connecting can be carried out easilyin the case where the light source driving unit 280 is disposed on theoutside (the exterior) of the first frame 40. Note that the “connectingsurface” of the connector member 71 refers to the surface of theconnector member 71 to which the connector member 76 is connected as apair. Here, one of the connector member 71 and the connector member 76is a male connector, and the other is a female connector. In the case ofa male connector, a terminal is formed in a convex connecting surface,whereas in the case of a female connector, a terminal is formed in aconcave connecting surface.

In this embodiment, an end portion 889 of the flexible wiring board 888on the one side X2 in the X-axis direction (that is, one portion of theflexible wiring board 888) is formed having a length that is greaterthan the length of the metallic plate 887 in the direction that plateextends (the lengthwise direction), and the portion that has been formedlonger is bent back toward the other surface 882 of the metallic plate887 so as to cover the side surface of the end of the metallic plate887. The end portion 889 of the flexible wiring board 888 is mounted tothe connector member 71 so that the connecting surface is disposedfacing outward (that is, toward the opposite side as the metallic plate887). Furthermore, the end portion 889 of the flexible wiring board 888is anchored to the other surface 882 of the metallic plate 887 using anadhesive or another such method, and the connector member 71 is anchoredto the metallic plate 887 via the end portion 889 of the flexible wiringboard 888. In addition, on the one surface 881 of the light sourcesubstrate 88, the light-emitting elements 89 are not mounted in regionsthat overlap with the location where the connector member 71 isprovided, and the connector member 71 is provided further toward the endof the light source substrate 88 in the lengthwise direction thereofthan the light-emitting element 89 that, of the plurality oflight-emitting elements 89, is located on the end.

Meanwhile, the connector member 76 that configures the connector 70along with the connector member 71 is connected to the leading end ofthe flexible wiring 77, such as lead lines, a flexible wiring board, orthe like, that extends from the light source driving unit 280 as shownin FIG. 1B. Accordingly, if the connector members 71 and 76 areconnected, the light source driving unit 280 can supply power to thelight-emitting elements 89 via the wiring 77, the connector 70, and theflexible wiring board 888.

In the illumination apparatus 8 configured in this manner, only thelight-emitting elements 89 protrude toward the light guiding plate 80from the light source substrate 88. Accordingly, in the light guidingplate 80, the side-end surfaces 801 and 802 serving as the light-entryportions 80 a extend linearly in the X-axis direction, and no cutouts orthe like are formed.

In addition, in this embodiment, the light source driving unit 280 isdisposed below the base plate portion 45 of the first frame 40, and thusa cutout 450 is formed in the base plate portion 45 of the first frame40 for leading the wiring 77 to below the base plate portion 45 of thefirst frame 40.

Main Effects of this Embodiment

As described thus far, with the illumination apparatus 8 and displayapparatus 100 according to this embodiment, the plurality oflight-emitting elements 89 are disposed following the light-entryportion 80 a of the light guiding plate 80, and the plurality oflight-emitting elements 89 are mounted to the rigid light sourcesubstrate 88 that extends along the light-entry portion 80 a. Inaddition, the connector member 71 is held by the light source substrate88. Accordingly, power can be supplied to the light-emitting elements 89via the connector member 71. It is thus unnecessary to lead the flexiblewiring out from the light source substrate 88, and as a result, thelight source substrate 88 does not deform as a large load not beingapplied to the light source substrate 88 via the wiring during assembly.Furthermore, the optical axes of the light-emitting elements 89 do nottilt as a result of deformation of the light source substrate 88.

In addition, the light-emitting elements 89 are mounted on the onesurface 881 side of the light source substrate 88 (the side where thelight guiding plate 80 is located), and the connector member 71 is heldon the another surface 882 side of the light source substrate 88.Accordingly, it is not necessary to provide a cutout in the lightguiding plate 80 in order to avoid interference between the lightguiding plate 80 and the connector member 71. For this reason, thelight-entry portions 80 a extend in linear form, and the illuminationarea is thus large. Furthermore, even in the case where the connectormembers 71 and 76 are connected after the light source substrate 88 isdisposed relative to the light guiding plate 80, the light guiding plate80 does not interfere, and thus the task of connecting the connectormembers 71 and 76 can be carried out with ease.

In addition, the light source substrate 88 includes the metallic plate887 that serves as a support plate and the flexible wiring board 888that is affixed to the one surface 881 side of the metallic plate 887,and the end portion 889 of the flexible wiring board 888 (one portion ofthe flexible wiring board 888) is bent back toward the another surface882 side and connected to the connector member 71 without being affixedto the one surface 881 of the metallic plate 887. Accordingly, there isan advantage in that separate wiring need not be extended from the onesurface 881 side of the light source substrate 88 toward the connectormember 71 on the other surface 882 side.

In addition, with the light source substrate 88, the metallic plate 887is used as a support plate. Furthermore, the substrate support plateportion 62 of the metallic light source support member 60 is disposed soas to overlap with the metallic plate 887 that configures the othersurface 882 of the light source substrate 88. Accordingly, heat producedby the light-emitting elements 89 can escape through the light sourcesubstrate 88, the light source support member 60, and the metallic firstframe 40.

Second Embodiment

FIG. 7 is a schematic diagram illustrating, from above, theconfiguration of the main elements of the illumination apparatus 8 usedin the display apparatus 100 according to a second embodiment of theinvention. Note that the basic configuration in this embodiment is thesame as that in the first embodiment, and thus corresponding constituentelements will be given the same reference numerals, and descriptionsthereof will be omitted.

Although a single connector member 71 is provided for the light sourcesubstrate 88 in the first embodiment, a plurality of connector members71 may be provided at locations that are distanced in the lengthwisedirection of the light source substrate 88. For example, with theillumination apparatus 8 illustrated in FIG. 7, connector members 71 areprovided at both ends of the light source substrate 88. In other words,in this embodiment, the connector members 71 are held on the othersurface 882 side of the light source substrate 88, and thus there areextremely few restrictions on the number of connector members 71.Accordingly, a number of connector members 71 that is suited tosupplying power to the light-emitting elements can be provided.Furthermore, even in the case where the number of the light-emittingelements 89 has been increased due to implementing a greater size forthe display screen of the display apparatus 100, power can be suppliedto the light-emitting elements 89 via the plurality of connector members71.

Third Embodiment

FIGS. 8A and 8B are schematic diagrams illustrating the configuration inthe vicinity of the light source substrate 88 used in the illuminationapparatus 8 of the display apparatus 100 according to a third embodimentof the invention; FIG. 8A is a diagram schematically illustrating thelight source substrate 88 from one surface 881, whereas FIG. 8B is adiagram schematically illustrating the light source substrate 88 fromthe another surface 882. Note that the configurations of thelight-emitting elements 89, light source substrates 88, and so ondisposed on the two side-end surfaces 801 and 802 (the light-entryportions 80 a) that oppose each other in the Y-axis direction of thelight guiding plate 80 are the same. Accordingly, FIG. 8A illustratesthe light-emitting elements 89, the light source substrate 88, and so ondisposed on the side-end surface 802 of the light guiding plate 80,whereas FIG. 8B illustrates the light-emitting elements 89, the lightsource substrate 88, and so on disposed on the side-end surface 801 ofthe light guiding plate 80.

In the aforementioned first and second embodiments, the configuration issuch that when providing the connector member 71 on the end portion ofthe light source substrate 88, the light-emitting elements 89 are notmounted in a region that overlaps with the location in which theconnector member 71 is provided on the one surface 881 of the lightsource substrate 88; however, as shown in FIGS. 8A and 8B, aconfiguration in which the light-emitting elements 89 are mounted in aregion that overlaps with the location in which the connector member 71is provided on the one surface 881 of the light source substrate 88 isemployed. In other words, the light-emitting elements 89 are mounted soas to extend to the end portion of the light source substrate 88, andthe connector member 71 is disposed on the rear surface side of theoutermost light-emitting element 89 so as to at least partially overlapwith the region in which that light-emitting element 89 is mounted(provided). Accordingly, the light source substrate 88 protrudes fromthe light source support member 60 in the extension direction of thelight source support member 60, the connector member 71 is disposed onthe surface in the side that does not oppose the protruding overhangportion of the light guiding plate 80 (that is, on the another surface882 side), and the corresponding connector member 76 is then connectedthereto. The connector member 71 is provided on the end portion of thelight source substrate 88, and is provided within a range in thelengthwise direction of the light source substrate 88 in which theplurality of light-emitting elements 89 are disposed. According to thisconfiguration, even in the case where the connector member 71 is used,the width dimension of the light source substrate 88 (that is, thedimension in the X-axis direction) can be kept to a minimum. In otherwords, in the light source substrate 88, providing the connector member71 on the rear surface that does not oppose the light guiding plate 80makes it possible to arrange and dispose the light-emitting elements 89as far as the end portion of the light source substrate 88. Accordingly,light can enter from the end portion of the light guiding plate 80 inthe direction in which the light-emitting elements 89 are arranged (theX-axis direction), which makes it possible to effectively utilize eventhe regions at the end portion of the light guiding plate 80 as theillumination apparatus 8 without waste.

Fourth Embodiment

FIG. 9 is a schematic diagram illustrating, from above, theconfiguration of the main elements of the illumination apparatus 8 usedin the display apparatus 100 according to a fourth embodiment of theinvention. Note that the basic configuration in this embodiment is thesame as that in the first embodiment, and thus corresponding constituentelements will be given the same reference numerals, and descriptionsthereof will be omitted.

As shown in FIG. 9, two connector members 71 are provided in locationsof the light source substrate 88 that are distanced from each other inthe lengthwise direction thereof in this embodiment, in the same manneras in the second embodiment. Here, of the plurality of connector members71, one connector member 71 (a connector member 711) is provided at anend portion of the light source substrate 88. On the other hand, theother connector member 71 (a connector member 712) is provided inapproximately the center of the light source substrate 88 in thelengthwise direction thereof, and is provided within the range in whichthe plurality of light-emitting elements 89 are disposed. In otherwords, in this embodiment, the connector members 71 are held on theanother surface 882 side of the light source substrate 88, and thusthere are extremely few restrictions on the locations in which theconnector members 71 are disposed. Accordingly, a number of connectormembers 71 that is suited to supplying power to the light-emittingelements can be provided. Furthermore, even in the case where the numberof the light-emitting elements 89 has been increased due to implementinga greater size for the display screen of the display apparatus 100,power can be supplied to the light-emitting elements 89 via theconnector member 71 provided on the end portion of the light sourcesubstrate (the connector member 711) and the connector member 71provided in approximately the center of the light source substrate 88 inthe lengthwise direction thereof (the connector member 712).

Note that in the case where the connector member 71 (the connectormember 712) is provided in approximately the center of the light sourcesubstrate 88 in the lengthwise direction thereof, the substrate supportplate portion 62 of the light source support member 60 and so ondescribed with reference to FIGS. 5A and 5B may be cut out from area toarea and the connector member 71 disposed on the other surface 882 ofthe light source substrate 88. Furthermore, to electrically connect theconnector member 71 provided in approximately the center of the lightsource substrate 88 in the lengthwise direction thereof (that is, theconnector member 712) to the light-emitting elements 89, a portionbranching from an area partway along the lengthwise direction of theflexible wiring board 888 (that is, a part of the flexible wiring board888) may be bent back toward the other surface 882 of the light sourcesubstrate 88 and connected to the connector member 712.

Other Embodiments

Although the aforementioned embodiments describe an example in which twoconnector members 71 are provided as an example in which a plurality ofconnector members 71 are provided for a single light source substrate88, three or more connector members 71 may be provided instead.

Although the aforementioned fourth embodiment describes an example inwhich a connector member 71 is provided on an end portion of the lightsource substrate 88 and in approximately the center of the light sourcesubstrate 88 in the lengthwise direction thereof, the connector member71 may also be provided only in approximately the center of the lightsource substrate 88 in the lengthwise direction thereof.

Although the aforementioned first through fourth embodiments have thesame configurations for the light-emitting elements 89, the light sourcesubstrate 88, and the connector member 71 on both the side-end surface801 side of the light guiding plate 80 and the side-end surface 802 sideof the light guiding plate 80, the side-end surface 801 side of thelight guiding plate 80 and the side-end surface 802 of the light guidingplate 80 may have different configurations. In addition, although theinvention is applied on both the side-end surface 801 side of the lightguiding plate 80 and the side-end surface 802 side of the light guidingplate 80 in the aforementioned first through fourth embodiments, theinvention may be applied only in one of those sides.

Although the light-emitting elements 89, light source substrate 88, andconnector member 71 are provided on both the side-end surface 801 sideof the light guiding plate 80 and the side-end surface 802 side of thelight guiding plate 80 in the aforementioned first through thirdembodiments, the invention may be applied in an illumination apparatus 8in which the light-emitting elements 89, light source substrate 88, andconnector member 71 are provided in only one of those sides.

Example of Installation in Electronic Device

Although the aforementioned embodiments describe an LCD television as anexample of the electronic device 2000 in which the display apparatus 100is installed, the display apparatus 100 in which the invention isapplied may also be used in the display units of electronic devices suchas personal computer displays, digital signage, car navigation devices,and mobile information terminals, in addition to LCD televisions.

The entire disclosure of Japanese Patent Application No. 2011-161707,filed Jul. 25, 2011 is expressly incorporated by reference herein.

What is claimed is:
 1. An illumination apparatus comprising: a lightguiding plate; a plurality of light-emitting elements disposed along aside-end surface of the light guiding plate that serves as a light-entryportion, each of the plurality of light-emitting elements having alight-emitting surface facing toward the side-end surface; and a lightsource substrate that extends along the light-entry portion and has theplurality of light-emitting elements disposed thereon on one surfaceside that faces the light-entry portion, the light source substrateincluding a support plate that configures the another surface side and aflexible wiring board that has a first part affixed to the support plateon the one surface side and a second part extending along the supportplate and over an end thereof, the second part of the flexible wiringboard being bent back toward the another surface side and connected to aconnector member without being affixed to the one surface side of thesupport plate, the connector member including a first connector memberand a second connector member, the second connector member beingconfigured to attach to the first connector member, the first connectormember being held on the another surface side of the light sourcesubstrate opposite to the one surface side, and the first connectormember overlapping at least a part of the light-entry portion whenviewed from a direction normal to the side-end surface, and the secondconnector member not being held on the another surface side of the lightsource substrate, and the second connector member being configured tosupply power to the plurality of light-emitting elements through thefirst connector member.
 2. The illumination apparatus according to claim1, wherein the light-entry portion extends in a linear shape.
 3. Theillumination apparatus according to claim 1, wherein the support plateis a metal plate.
 4. The illumination apparatus according to claim 1,wherein the connector member is provided further toward an end portionof the light source substrate in a lengthwise direction thereof than alight-emitting element that, of the plurality of light-emittingelements, is located furthest toward the end portion.
 5. Theillumination apparatus according to claim 1, wherein the connectormember is provided within a range of a lengthwise direction of the lightsource substrate in which the plurality of light-emitting elements aredisposed.
 6. The illumination apparatus according to claim 1, wherein aplurality of connector members are held on the another surface side ofthe light source substrate.
 7. A display apparatus provided with theillumination apparatus according to claim 1, the display apparatuscomprising: a display panel disposed overlapping a light-emittingsurface side of the light guiding plate.
 8. An electronic devicecomprising the display apparatus according to claim
 7. 9. Theillumination apparatus according to claim 1, the illumination apparatusfurther comprising: a frame covering a rear surface of the light guidingplate, the frame including a frame side positioned opposite to theanother surface with respect to the light guiding plate in a plan viewthat is a direction normal to the light guiding plate, and the firstconnector member disposed between the light source substrate and anextended line of the frame side in the plan view.
 10. An illuminationapparatus comprising: a light guiding plate; a plurality oflight-emitting elements disposed along a side-end surface of the lightguiding plate that serves as a light-entry portion, each of theplurality of light-emitting elements having a light-emitting surfacefacing toward the side-end surface; and a light source substrate thatextends along the light-entry portion and has the plurality oflight-emitting elements disposed thereon on one surface side that facesthe light-entry portion, the light source substrate including a supportplate that configures the another surface side and a flexible wiringboard that has a first part affixed to the support plate on the onesurface side and a second part extending along the support plate andover an end thereof, the second part of the flexible wiring board beingbent back toward the another surface side and connected to a connectormember without being affixed to the one surface side of the supportplate, the connector member including a first connector member and asecond connector member, the first connector member having a protrudingportion protruding from the another surface side of the light sourcesubstrate opposite to the one surface side, and the first connectormember overlapping at least a part of the light-entry portion whenviewed from a direction normal to the side-end surface; and the secondconnector member configured to attach to the protruding portion tosupply power to the plurality of light-emitting elements.
 11. Theillumination apparatus according to claim 10, wherein the connectormember is provided further toward an end portion of the light sourcesubstrate in a lengthwise direction thereof than a light-emittingelement that, of the plurality of light-emitting elements, is locatedfurthest toward the end portion.
 12. The illumination apparatusaccording to claim 10, wherein the connector member is provided within arange of a lengthwise direction of the light source substrate in whichthe plurality of light-emitting elements are disposed.
 13. A displayapparatus provided with the illumination apparatus according to claim10, the display apparatus comprising: a display panel disposedoverlapping a light-emitting surface side of the light guiding plate.14. An electronic device comprising the display apparatus according toclaim
 13. 15. The illumination apparatus according to claim 10, theillumination apparatus further comprising: a frame covering a rearsurface of the light guiding plate, the frame including a frame sidepositioned opposite to the another surface with respect to the lightguiding plate in a plan view that is a direction normal to the lightguiding plate, and the first connector member disposed between the lightsource substrate and an extended line of the frame side in the planview.
 16. An illumination apparatus comprising: a light guiding plate; aplurality of light-emitting elements disposed along a side-end surfaceof the light guiding plate that serves as a light-entry portion, each ofthe plurality of light-emitting elements having a light-emitting surfacefacing toward the side-end surface; a light source substrate thatextends along the light-entry portion and has the plurality oflight-emitting elements disposed thereon on one surface side that facesthe light-entry portion, the light source substrate including a supportplate that configures the another surface side and a flexible wiringboard that has a first part affixed to the support plate on the onesurface side and a second part extending along the support plate andover an end thereof, the second part of the flexible wiring board beingbent back toward the another surface side and connected to a connectormember without being affixed to the one surface side of the supportplate, and the connector member being held on the another surface sideof the light source substrate opposite to the one surface side, and theconnector member overlapping at least a part of the light-entry portionwhen viewed from a direction normal to the side-end surface; and asupport plate formed between the one surface side and the anothersurface side.
 17. The illumination apparatus according to claim 16,wherein the connector member is provided further toward an end portionof the light source substrate in a lengthwise direction thereof than alight-emitting element that, of the plurality of light-emittingelements, is located furthest toward the end portion.
 18. Theillumination apparatus according to claim 16, wherein the connectormember is provided within a range of a lengthwise direction of the lightsource substrate in which the plurality of light-emitting elements aredisposed.
 19. A display apparatus provided with the illuminationapparatus according to claim 16, the display apparatus comprising: adisplay panel disposed overlapping a light-emitting surface side of thelight guiding plate.
 20. An electronic device comprising the displayapparatus according to claim
 19. 21. The illumination apparatusaccording to claim 16, the illumination apparatus further comprising: aframe covering a rear surface of the light guiding plate, the frameincluding a frame side positioned opposite to the another surface withrespect to the light guiding plate in a plan view that is a directionnormal to the light guiding plate, and the connector member disposedbetween the light source substrate and an extended line of the frameside in the plan view.